/**
 * 日期格式化
 */
function dateFormat(date, format) {
  format = format || "yyyy-MM-dd hh:mm:ss";
  if (date !== "Invalid Date") {
    let o = {
      "M+": date.getMonth() + 1, //month
      "d+": date.getDate(), //day
      "h+": date.getHours(), //hour
      "m+": date.getMinutes(), //minute
      "s+": date.getSeconds(), //second
      "q+": Math.floor((date.getMonth() + 3) / 3), //quarter
      S: date.getMilliseconds() //millisecond
    };
    if (/(y+)/.test(format))
      format = format.replace(
        RegExp.$1,
        (date.getFullYear() + "").substr(4 - RegExp.$1.length)
      );
    for (let k in o)
      if (new RegExp("(" + k + ")").test(format))
        format = format.replace(
          RegExp.$1,
          RegExp.$1.length === 1
            ? o[k]
            : ("00" + o[k]).substr(("" + o[k]).length)
        );
    return format;
  }
  return "";
}
module.exports = { dateFormat };
